B5m help

[Stickygeko]

Please can anyone offer any advice...

Was at bury yesterday, track was dry in parts wet in others. I was on ballistics.

Im having problems with handling... im experiencing lots of understeer on power, when i back off/brake into corners i can corner quick sharp but soon as I put power down the back end wants to swap places with the front.

im running grey rear spring yellow front springs (tried orange and white in the front - white was even worse)
middle hole on the front and rear towers, lower outer hole
long links
45g brass front bulkhead 30degree 5 degrees outers

really struggled to point and drive in a straight line

thanks
Paul